Properties of ferric oxide, what are they used for?

Ferric oxide.

The physical property is a reddish-brown powder, commonly known as iron red.

Chemically, it is a basic oxide, which can react with acids, can react with acidic oxides, and can react with reducing substances such as CO, H2, C, etc.

Uses: Commonly used as red paints and coatings, the main component of hematite is Fe2O3, which is the raw material for iron smelting.

Iron Fe, atomic number 26, relative atomic mass.

Iron has a variety of allotropic forms. Iron is the more reactive metal in the table of metal activity sequences.

in front of hydrogen. At room temperature, iron is not easy to react with non-metallic elements such as oxygen, sulfur, and chlorine in dry air, and reacts violently at high temperatures. Iron is burned in oxygen to form Fe3O4, and red-hot iron reacts with water vapor to form Fe3O4.

Iron is easily soluble in dilute inorganic acids and concentrated hydrochloric acid to form divalent iron salts and release hydrogen. Concentrated sulfuric acid at room temperature.

or concentrated nitric acid, a layer of oxide protective film is formed on the surface to "passivate" the iron, so iron products can be used to contain concentrated sulfuric acid or concentrated nitric acid. Iron is a variable valence element, and the common valence states are +2 and +3. Iron loses two electrons when it reacts with sulfur, copper sulfate solution, hydrochloric acid, dilute sulfuric acid, etc., and becomes +2 valence.

It reacts with Cl2, Br2, nitric acid and hot concentrated sulfuric acid to be oxidized to Fe3+. Fe3O4, which is formed by the reaction of iron with oxygen or water vapor, can be regarded as FeO·Fe2O3

Of these, 1 3 FE is +2 and 2 3 is +3. The +3-valent compound of iron is relatively stable.

Fe2O3 = iron oxide, also known as ferric oxide, burnt limonite, burnt ochre, iron dan, iron red, red powder, Venetian red (the main component is iron oxide), etc. The chemical formula Fe2O3, soluble in hydrochloric acid, is a reddish-brown powder. Its reddish-brown powder is a low-grade pigment, known as iron oxide red in industry, used in paint, ink, rubber and other industries, can be used as a catalyst, glass, gemstones, metal polishing agent, can be used as ironmaking raw materials.

Iron oxide reacts with acid to form iron salts and water. [2]

Example: Fe2O3 + 6HCl = 2FeCl3 + 3H2O thermite reaction. Aluminum is mixed with iron oxide to form a thermite agent, which is heated to produce alumina and iron.

Chemical formula: 2Al+Fe2O3= =Al2O3+2Fe carbon, carbon monoxide reduction.

Iron oxide can be mixed with carbon and heated, and iron and carbon dioxide are extracted.

Chemical Formula: 3C+2Fe2O3=High Temperature=4Fe+3CO2 It will decompose into ferric tetroxide and oxygen at high temperature.

Iron oxide can be mixed with carbon monoxide and heated to produce iron and carbon dioxide.

Chemical formula: 3CO+FE2O3= =2FE+3CO2

The main difference is the physical properties.

Different, different external rubber slag concept, different applications, as follows:

First, the physical properties are different.

1. Ferric oxide.

Odorless. Insoluble in water, organic acids and organic solvents. Soluble in inorganic acids. Stable to light, heat and air. It is relatively stable to acids and alkalis. Strong tinting strength. Refractive index.

The melting point is 1550, and it is decomposed in about 1565.

2. Ferric oxide.

Black Fe3O4 is a mixed valence oxide of iron with a melting point of 1597 and a density of insoluble in water and soluble in acid solution, in nature as magnetite.

It has strong submagnetism and high conductivity at room temperature.

Ferromagnetism. and ferromagnetic substances undergo a second-order phase transition above the Curie temperature to transform into paramagnetic substances. Curie temperature of Fe3O4.

for 585.

Second, the appearance is different.

1. Ferric oxide.

Red or dark red amorphous powder.

2. Ferric oxide.

Solid black crystals.

Third, the application is different.

1. The source is like talking about ferric oxide.

It is mainly used in magnetic materials.

polishing and abrasive materials, paint and ink industry, etc.

2. Ferric oxide.

It is mainly used in making magnets and tape recorders.

tapes, primers and topcoats, etc.

The above content refers to Encyclopedia - Iron Oxide.

The above content refers to the hail touch test encyclopedia - ferric tetroxide.

1. The valency of iron is different: Fe2O3 is +3 valence of iron, and Fe3O4 is +2 and +3 valence, which can be written as FeO·Fe2O3. The color is different and the crack cavity is J:

Circular iron oxide reddish-brown (the main component of hematite), iron oxide black (the main component of magnetite).

2. Ferric oxide is a brown-red (red) or black powder, commonly known as iron red, with a melting point of 1565 and a relative density. It exists in the form of hematite in nature, has amphotericity, reacts with acid Zhaokai to form Fe( ) salt, and reacts with strong alkali to obtain [Fe(OH)6]3-. It has a certain reducibility in strong alkali medium and can be oxidized by strong oxidants.

Ferric oxide is insoluble in water and does not interact with water. It can be prepared by burning ferrous sulfate, ferric oxalate, and oxidizing iron oxide, and it can also be prepared by calcining pyrite in the air. It is often used as pigments, polishes, catalysts and red powders.

3. Ferric oxide is a black crystal, heated to the ignition point of the melting code (1594 5 Jane) and decomposed at the same time, with a relative density of very good magnetism, so it is also called "magnetic iron oxide". It is the main component of natural magnetite, and it is easy to oxidize to ferric oxide in the air in a humid state. Insoluble in water, soluble in acid.

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The difference between ferric tetroxide and ferric oxide is that the valency of iron elements is not the same. Different physical properties, different appearances, and different applications

The physical properties are different:

1. Ferric oxide, odorless. Insoluble in water, organic acids and organic solvents. Soluble in inorganic acids. Stable to light, heat and air. It is relatively stable to acids and alkalis. Strong tinting strength. Refractive index. The melting point is 1550, and it is decomposed in about 1565.

2. High bucket triferric tetroxide, black Fe3O4 is a mixed valence oxide of iron, the melting point is 1597, the density is, not dissolved in water, soluble in acid solution, in nature in the form of magnetite, at room temperature has strong submagnetism and high conductivity.

Ferromagnetic and ferromagnetic substances undergo a second-order phase transition above the Curie temperature to transform into paramagnetic substances. The Curie temperature of Fe3O4 is 585.

Difference Between Ferric Oxide and Ferric Oxide:1.The physical properties are different:Ferric oxide is odorless.

Insoluble in water, organic acids and organic solvents. Soluble in inorganic acids. Stable to light, heat and air.

It is relatively stable to acids and alkalis. Strong tinting strength. Refractive index.

The melting point is 1550, and it is decomposed in about 1565. Ferric oxide, black Fe3O4 is a mixed valence oxide of iron, the melting point is 1597, the density is, insoluble in water, soluble in acid solution, in nature in the form of magnetite, at room temperature has strong submagnetism and quite high conductivity.

2.The appearance is differentDiferric trioxomorphic is a red or dark red amorphous powder. Ferric oxide is a solid black crystal.

3.The application is differentFerric oxide is mainly used in magnetic materials, polishing and grinding materials, paint and ink industries, etc. Ferro-tetroxide is mainly used in the production of magnets, tape recorder tapes, primers and topcoats, etc.

Ferric Oxide Properties:Ferroferric oxide, chemical formula Fe3O4. It can be approximated as a compound composed of ferrous oxide and iron oxide group coarse clumps (.

This substance is soluble in acid solution, insoluble in water, alkali solution and organic solvents such as ethanol and ether. Natural ferric tetroxide is insoluble in acid solution and is easily oxidized in the air in a humid state. It is commonly used as a pigment and polishing agent, and can also be used in the manufacture of audio tapes and electrolytic audio equipment.